# Find the effective area required to build such a capacitor

#### euphrates

1. The problem statement, all variables and given/known data

One can buy 1 Farad capacitors which are only a few centimeters long. Speculate
on how you can build such a capacitor. Assuming that you are using Strontium
Titanate as the dielectric find the minimum gap for a maximum voltage of 5 volts.
Find the effective area required to build such a capacitor. How can you put this area
into a volume that is only a few centimeters

2. Relevant equations
C=Q/V
C=EoA/d

3. The attempt at a solution
to find the minimum gap, i think we can start from dielectric strength??

Last edited:
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Staff Emeritus
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#### euphrates

i dont have any idea about how to solve that problem so a little help

#### Tom Mattson

Staff Emeritus
Gold Member
You need to start by looking at the equation for the capacitance of a capacitor with a dielectric. The equation you listed is for capacitance with no dielectric.

"Find the effective area required to build such a capacitor"

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